void drawLineH(uint8_t x1, uint8_t x2, uint8_t y); void drawLineV(uint8_t x, uint8_t y1, uint8_t y2); void drawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2 ...

class Inventory { private List items = new List(); private const string FilePath = "product_file.txt"; public Inventory() { LoadFromFile(); } public void AddItem(Item ...

Subclass of drawable that performs none of its drawing but maintains internal state for all its state changes. This is useful when a drawable_wrapper is being exceuted for its side-effects alone.

This class creates a drawable_wrapper object which does a debugging trace print of its operations as it draws (then forwards the actual drawing operation to its wrapped drawable). Find the min and max ...